diff --git a/radio/FirComplex.hpp b/radio/FirComplex.hpp
index cd42076..ac48148 100644
--- a/radio/FirComplex.hpp
+++ b/radio/FirComplex.hpp
@@ -9,6 +9,7 @@
 #define	_RADIO_FIRCOMPLEX_HPP_
 
 #include <cpp/radio/Vector.hpp>
+#include <cpp/radio/processor/src/Buffer.hpp>
 
 namespace Radio
 {
@@ -33,11 +34,31 @@ public:
 		m_state = ComplexScalar(0,0);
 	}
 	
+	// Feed single scalar
 	void feed(ComplexScalar const &x)
 	{
 		insert_left(m_state, x);
 	}
 
+	// Feed from array
+	void feed(ComplexScalar const *x, size_t len)
+	{
+		for (size_t i=0; i < len; i++)
+		{
+			feed(*(x++));
+		}
+	}
+
+	// Feed from Processor::Buffer
+	void feed(Processor::Buffer<ComplexScalar> &buf_in, size_t len)
+	{
+		for (size_t i=0; i < len; i++)
+		{
+			ComplexScalar x = buf_in.readAt(0);
+			feed(x);
+		}
+	}
+
 	ComplexScalar process(CVec const &coeff)
 	{
 		return trans(m_state) * conj(coeff);